Huawei NetCol5000-C - Page 120

NetCol5000-C Chilled Water-Cooled In-Row Precision
Air Conditioner
User Manual
6 System Operation and Maintenance
Issue 02 (2013-12-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
112
Alarm
ID
Alarm Name
Severity
System
Operation
Possible Causes
Recovery Measures
damaged.
a101
CW value
abnormal
feedback
Major
The alarm is
generated.
1. Cables to the chilled
water valve are loose
or damaged.
2. The chilled water
valve is faulty.
1. Adjust the cables to
the chilled water
valve.
2. Maintain or replace
the chilled water
valve.
a103
Indoor fan
power alarm
Major
The alarm is
generated, and
the indoor fan
output is less
than 85%.
1. The indoor fan power
module is faulty.
2. Cables to the indoor
fan power module are
loose or damaged.
1. Maintain or replace
the indoor fan power
module.
2. Check cables to the
dry contact of the
indoor fan power
module.
a104
In-cabinet
overflow
Critical
The alarm is
generated, and
the
NetCol5000-C
shuts down.
1. Water exists in the
overflow pan.
2. The cabinet overflow
sensor is
disconnected.
1. Check and clear the
water.
2. Maintain or replace
the cabinet overflow
sensor.
a105
Indoor fan
failure
Critical
The alarm is
generated.
The number of faulty
indoor fans is greater
than or equals to six.
Maintain or replace the
faulty indoor fans.
a106
Cab overflow
sensor fault
Major
The alarm is
generated, and
the
NetCol5000-C
shuts down.
The cabinet overflow
sensor is faulty.
Maintain or replace the
cabinet overflow sensor.
a108
Cold aisle
1/2/3 temp
invalid
Major
The alarm is
generated.
1. The ambient T/H
sensor fails to
communicate with
the NetCol5000-A.
2. Dirt or water exists
around the board,
which leads to a
detection fault.
3. The ambient T/H
sensor is faulty.
1. Clear the return-air 2
T/H brd comm fail
alarm.
2. Remove dirt or
water from the
board.
3. Maintain or replace
the ambient T/H
sensor.
a109
Cold aisle
1/2/3 humid
invalid
Major
The alarm is
generated.
1. The ambient T/H
sensor fails to
communicate with
the NetCol5000-A.
2. Dirt or water exists
around the board,
which leads to a
detection fault.
3. The ambient T/H
sensor is faulty.
1. Clear the return-air 2
T/H brd comm fail
alarm.
2. Remove dirt or
water from the
board.
3. Maintain or replace
the ambient T/H
sensor.